CN1099102C - 光学头 - Google Patents

光学头 Download PDF

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Publication number
CN1099102C
CN1099102C CN96108957A CN96108957A CN1099102C CN 1099102 C CN1099102 C CN 1099102C CN 96108957 A CN96108957 A CN 96108957A CN 96108957 A CN96108957 A CN 96108957A CN 1099102 C CN1099102 C CN 1099102C
Authority
CN
China
Prior art keywords
beam splitter
polarized light
light
optical head
light component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN96108957A
Other languages
English (en)
Chinese (zh)
Other versions
CN1146042A (zh
Inventor
日根野哲
安藤正树
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of CN1146042A publication Critical patent/CN1146042A/zh
Application granted granted Critical
Publication of CN1099102C publication Critical patent/CN1099102C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1395—Beam splitters or combiners
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1362—Mirrors

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
CN96108957A 1995-05-25 1996-05-25 光学头 Expired - Fee Related CN1099102C (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP150858/95 1995-05-25
JP7150858A JPH08321088A (ja) 1995-05-25 1995-05-25 光学ピックアップ
JP150858/1995 1995-05-25

Publications (2)

Publication Number Publication Date
CN1146042A CN1146042A (zh) 1997-03-26
CN1099102C true CN1099102C (zh) 2003-01-15

Family

ID=15505919

Family Applications (1)

Application Number Title Priority Date Filing Date
CN96108957A Expired - Fee Related CN1099102C (zh) 1995-05-25 1996-05-25 光学头

Country Status (4)

Country Link
US (1) US5701287A (ko)
JP (1) JPH08321088A (ko)
KR (1) KR100417936B1 (ko)
CN (1) CN1099102C (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19544966A1 (de) * 1995-12-04 1997-06-05 Thomson Brandt Gmbh Gerät zum Beschreiben und/oder Lesen optischer Aufzeichnungsträger unterschiedlichen Aufbaus
KR100252944B1 (ko) * 1997-02-25 2000-04-15 구자홍 광픽업장치
US6147953A (en) * 1998-03-25 2000-11-14 Duncan Technologies, Inc. Optical signal transmission apparatus
JP2007035114A (ja) * 2005-07-25 2007-02-08 Konica Minolta Opto Inc 偏光分離素子と光ピックアップ装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077723A (en) * 1986-12-25 1991-12-31 Sony Corporation Optical pick-up apparatus which utilizes plural prisms
EP0627733A1 (en) * 1993-06-02 1994-12-07 Matsushita Electric Industrial Co., Ltd. Optical head device and optical information apparatus
EP0631279A2 (en) * 1993-06-25 1994-12-28 Nec Corporation Head device for magneto-optical disk

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05109143A (ja) * 1991-10-18 1993-04-30 Sony Corp 光学ピツクアツプ装置
JPH06168463A (ja) * 1992-09-18 1994-06-14 Ricoh Co Ltd 光ヘッド
JPH06176426A (ja) * 1992-12-08 1994-06-24 Sony Corp 光学ピックアップ装置
JP3541893B2 (ja) * 1993-08-06 2004-07-14 ソニー株式会社 光磁気記録媒体再生装置
JP3392206B2 (ja) * 1994-03-11 2003-03-31 パイオニア株式会社 光ピックアップ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077723A (en) * 1986-12-25 1991-12-31 Sony Corporation Optical pick-up apparatus which utilizes plural prisms
EP0627733A1 (en) * 1993-06-02 1994-12-07 Matsushita Electric Industrial Co., Ltd. Optical head device and optical information apparatus
EP0631279A2 (en) * 1993-06-25 1994-12-28 Nec Corporation Head device for magneto-optical disk

Also Published As

Publication number Publication date
US5701287A (en) 1997-12-23
KR100417936B1 (ko) 2004-04-21
CN1146042A (zh) 1997-03-26
KR960042579A (ko) 1996-12-21
JPH08321088A (ja) 1996-12-03

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20030115

Termination date: 20100525